This enables ARB_shader_image_load_store and ARB_shader_image_size when
the backend claims support for these. It will also implicitly enable the
image component of ARB_shader_texture_image_samples.
Signed-off-by: Ilia Mirkin <imir...@alum.mit.edu>
---
src/mesa/state_tracker/st_extensions.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/src/mesa/state_tracker/st_extensions.c
b/src/mesa/state_tracker/st_extensions.c
index d066784..f0fee88 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -223,6 +223,9 @@ void st_init_limits(struct pipe_screen *screen,
screen, sh, PIPE_SHADER_CAP_MAX_SHADER_BUFFERS) / 2;
pc->MaxShaderStorageBlocks = pc->MaxAtomicBuffers;
+ pc->MaxImageUniforms = screen->get_shader_param(
+ screen, sh, PIPE_SHADER_CAP_MAX_SHADER_IMAGES);
+
/* Gallium doesn't really care about local vs. env parameters so use the
* same limits.
*/
@@ -363,6 +366,19 @@ void st_init_limits(struct pipe_screen *screen,
c->MaxShaderStorageBlockSize = 1 << 27;
extensions->ARB_shader_storage_buffer_object = GL_TRUE;
}
+
+ c->MaxCombinedImageUniforms =
+ c->Program[MESA_SHADER_VERTEX].MaxImageUniforms +
+ c->Program[MESA_SHADER_TESS_CTRL].MaxImageUniforms +
+ c->Program[MESA_SHADER_TESS_EVAL].MaxImageUniforms +
+ c->Program[MESA_SHADER_GEOMETRY].MaxImageUniforms +
+ c->Program[MESA_SHADER_FRAGMENT].MaxImageUniforms;
+ c->MaxImageUnits = MAX_IMAGE_UNITS;
+ c->MaxImageSamples = 0; /* XXX */
+ if (c->MaxCombinedImageUniforms) {
+ extensions->ARB_shader_image_load_store = GL_TRUE;
+ extensions->ARB_shader_image_size = GL_TRUE;
+ }
}
--
2.4.10
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